Senior Storage Systems Engineer: Linux Performance & NVMe

Bytedance; San Jose (CA); On-site; USD 162,000 - 388,000; Full time

Job summary

ByteDance is seeking a Senior Software Engineer, Storage Systems in San Jose to optimize the Linux storage path, spanning the block layer, file systems, NVMe, and device drivers. You will own storage features, diagnose complex production issues, and collaborate across hardware, validation, and production teams.

The role emphasizes performance, reliability, and data integrity, with responsibilities from measurement to implementation and upstream contributions.

Qualifications

• 3+ years of professional experience in C or C++ systems programming on Linux.
• Deep understanding of the Linux I/O path and hands-on experience in NVMe, HDD, SATA SSD, AHCI, HBA, RAID, block layer, file systems, device drivers, memory management, caching, or I/O scheduling.

Responsibilities

• Analyze the performance bottleneck and optimize Linux storage components across block I/O, file systems, NVMe, device drivers, caching, and relevant user-space services.
• Diagnose failures or exceptions across devices, PCIe, firmware, kernel, memory, networking, runtimes, and applications; drive root-cause analysis through verified resolution.
• Characterize workloads and use tracing, profiling, telemetry, logs, and hardware counters to identify latency, throughput, utilization, and scalability bottlenecks.
• Improve reliability through fault detection, isolation, retry, timeout, reset, failover, recovery, regression detection, and graceful degradation mechanisms.
• Own storage features from workload requirements and architecture through coding, integration, qualification, rollout, and sustained support.
• Create automated correctness, performance, endurance, stress, fault-injection, and compatibility tests for new hardware and software releases.
• Partner with device, firmware, kernel, server, network, validation, production, and workload teams to deliver storage capabilities into production.
• Review designs and code, document performance and recovery behavior, and contribute upstream where maintained community interfaces are the right solution.

Skills

C/C++

Linux I/O path

NVMe

File systems

Device drivers

Education

Bachelor's degree in Computer Science/Engineering or equivalent

Job description

ByteDance is seeking a Senior Software Engineer, Storage Systems in San Jose to optimize the Linux storage path, spanning the block layer, file systems, NVMe, and device drivers. You will own storage features, diagnose complex production issues, and collaborate across hardware, validation, and production teams.

The role emphasizes performance, reliability, and data integrity, with responsibilities from measurement to implementation and upstream contributions.